Captaincivvy
If you ask questions like
Who's the best CPL instructor in the North Oxford area
then expect some flack as you clearly do not understand, nor taken the effort to understand the commercial aviation world. You rarely get to pick your instructor even for PPL.
Your number 1 priority if you wish to continue down the the commercial route is to go to Gatwick and get a CLASS 1 MEDICAL as without it you can't be a commercial pilot.
All the information you are seeking as been asked countless times on this forum and you should use the search function
I can't believe you are even thinking of selling a franchise to become a commercial pilot without in depth research, similar to buying your franchise, or you were you sold a dream? Aviation is a similar story.
I wish you the best but the signs aren't good.